<!-- <template>
  <div class="wrapper">
    <div class="model" v-show="model" @click="model = false">
      <div class="model-show">
        <img :src="modelSrc" alt="">
      </div>
    </div>
    <div class="content">
      <h1><a class="title" href="https://github.com/xyxiao001/vue-cropper" target="_blank">vue-cropper</a></h1>
      <iframe src="https://ghbtns.com/github-btn.html?user=xyxiao001&repo=vue-cropper&type=star&count=true&size=large" frameborder="0" scrolling="0" width="160px" height="30px"></iframe>
      <div class="show-info">
        <h2>install</h2>
        <code class="language-html">npm install vue-cropper</code>
      </div>
      <div class="show-info">
        <h2>example1 基本例子 无限制</h2>
        <div class="test test1">
          <vueCropper ref="cropper" :img="option.img" :outputSize="option.size" :outputType="option.outputType" :info="true" :full="option.full" :canMove="option.canMove" :canMoveBox="option.canMoveBox" :fixedBox="option.fixedBox" :original="option.original" @realTime="realTime" @imgLoad="imgLoad"></vueCropper>
        </div>
        <div class="test-button">
          <button @click="changeImg" class="btn">changeImg</button>
          <label class="btn" for="uploads">upload</label>
          <input type="file" id="uploads" style="position:absolute; clip:rect(0 0 0 0);" accept="image/png, image/jpeg, image/gif, image/jpg" @change="uploadImg($event, 1)">
          <button @click="startCrop" v-if="!crap" class="btn">start</button>
          <button @click="stopCrop" v-else class="btn">stop</button>
          <button @click="clearCrop" class="btn">clear</button>
          <button @click="refreshCrop" class="btn">refresh</button>
          <button @click="changeScale(1)" class="btn">+</button>
          <button @click="changeScale(-1)" class="btn">-</button>
          <button @click="rotateLeft" class="btn">rotateLeft</button>
          <button @click="rotateRight" class="btn">rotateRight</button>
          <button @click="finish('base64')" class="btn">preview(base64)</button>
          <button @click="finish('blob')" class="btn">preview(blob)</button>
          <a @click="down('base64')" class="btn">download(base64)</a>
          <a @click="down('blob')" class="btn">download(blob)</a>
          <div style="display:block; width: 100%;">
            <label class="c-item">
              <span>上传图片是否显示原始宽高 (针对大图 可以铺满)</span>
              <input type="checkbox" v-model="option.original">
            </label>
            <label class="c-item">
              <span>能否拖动图片</span>
              <input type="checkbox" v-model="option.canMove">
            </label>
            <label class="c-item">
              <span>能否拖动截图框</span>
              <input type="checkbox" v-model="option.canMoveBox">
            </label>
            <label class="c-item">
              <span>截图框固定大小</span>
              <input type="checkbox" v-model="option.fixedBox">
            </label>
            <label class="c-item">
              <span>是否输出原图比例的截图</span>
              <input type="checkbox" v-model="option.full">
            </label>
            <p>输出图片格式</p>
            <label class="c-item">
              <label>jpg
                <input type="radio" name="type" value="jpeg" v-model="option.outputType">
              </label>
              <label>png
                <input type="radio" name="type" value="png" v-model="option.outputType">
              </label>
              <label>webp
                <input type="radio" name="type" value="webp" v-model="option.outputType">
              </label>
            </label>
          </div>
        </div>
        <div class="show-preview" :style="{'width': previews.w + 'px', 'height': previews.h + 'px',  'overflow': 'hidden', 'margin': '5px'}">
          <div :style="previews.div">
            <img :src="previews.url" :style="previews.img">
          </div>
        </div>
        <codes>
        </codes>
      </div>
      <div class="show-info">
        <h2>example2 自动生成截图框 固定比例 w : h => 4 : 3</h2>
        <div class="test">
          <vueCropper ref="cropper2" :img="example2.img" :outputSize="example2.size" :outputType="example2.outputType" :info="example2.info" :canScale="example2.canScale" :autoCrop="example2.autoCrop" :autoCropWidth="example2.autoCropWidth" :autoCropHeight="example2.autoCropHeight" :fixed="example2.fixed" :fixedNumber="example2.fixedNumber"></vueCropper>
        </div>
        <label class="btn" for="upload2">upload</label>
        <input type="file" id="upload2" style="position:absolute; clip:rect(0 0 0 0);" accept="image/png, image/jpeg, image/gif, image/jpg" @change="uploadImg($event, 2)">
        <button @click="finish2('base64')" class="btn">preview(base64)</button>
        <codes>
        </codes>
      </div>
      <div class="show-info">
        <h2>example3 自动生成截图框 固定大小 不能改变</h2>
        <div class="test">
          <vueCropper ref="cropper3" :img="example3.img" :autoCrop="example3.autoCrop" :autoCropWidth="example3.autoCropWidth" :autoCropHeight="example3.autoCropHeight" :fixedBox="example3.fixedBox"></vueCropper>
        </div>
        <button @click="finish3('base64')" class="btn">preview(base64)</button>
        <codes>
        </codes>
      </div>
    </div>
  </div>
</template>
<script>
import vueCropper from '@/components/vue-cropper'
import codes from '@/components/code'
export default {
  data: function() {
    return {
      title: '审批', //页面标题,
      bottom_nav: [], //底部栏信息
      model: false,
      modelSrc: '',
      crap: false,
      previews: {},
      lists: [
        // {
        // 	img: 'https://fengyuanchen.github.io/cropper/images/picture.jpg'
        // },
        {
          img: 'http://ofyaji162.bkt.clouddn.com/touxiang.jpg'
        },
        {
          img: 'https://o90cnn3g2.qnssl.com/0C3ABE8D05322EAC3120DDB11F9D1F72.png'
        },
        {
          img: 'http://ofyaji162.bkt.clouddn.com/bg1.jpg',
        },
        {
          img: 'http://ofyaji162.bkt.clouddn.com/bg2.jpg',
        },
        {
          img: 'http://ofyaji162.bkt.clouddn.com/can.jpg'
        },
        {
          img: 'http://ofyaji162.bkt.clouddn.com/nightcat.jpg'
        }
      ],
      option: {
        img: '',
        size: 1,
        full: false,
        outputType: 'png',
        canMove: true,
        fixedBox: false,
        original: false,
        canMoveBox: true
      },
      example2: {
        img: 'http://ofyaji162.bkt.clouddn.com/bg1.jpg',
        info: true,
        size: 1,
        outputType: 'jpeg',
        canScale: true,
        autoCrop: true,
        // 只有自动截图开启 宽度高度才生效
        autoCropWidth: 300,
        autoCropHeight: 250,
        fixed: true,
        fixedNumber: [4, 3]
      },
      example3: {
        img: 'https://o90cnn3g2.qnssl.com/0C3ABE8D05322EAC3120DDB11F9D1F72.png',
        autoCrop: true,
        autoCropWidth: 200,
        autoCropHeight: 200,
        fixedBox: true
      },
      downImg: '#'
    }
  },
  methods: {
    changeImg() {
      this.option.img = this.lists[~~(Math.random() * this.lists.length)].img
    },
    startCrop() {
      // start
      this.crap = true
      this.$refs.cropper.startCrop()
    },
    stopCrop() {
      //  stop
      this.crap = false
      this.$refs.cropper.stopCrop()
    },
    clearCrop() {
      // clear
      this.$refs.cropper.clearCrop()
    },
    refreshCrop() {
      // clear
      this.$refs.cropper.refresh()
    },
    changeScale(num) {
      num = num || 1
      this.$refs.cropper.changeScale(num)
    },
    rotateLeft() {
      this.$refs.cropper.rotateLeft()
    },
    rotateRight() {
      this.$refs.cropper.rotateRight()
    },
    finish(type) {
      // 输出
      // var test = window.open('about:blank')
      // test.document.body.innerHTML = '图片生成中..'
      if (type === 'blob') {
        this.$refs.cropper.getCropBlob((data) => {
          var img = window.URL.createObjectURL(data)
          this.model = true
          this.modelSrc = img
        })
      } else {
        this.$refs.cropper.getCropData((data) => {
          this.model = true
          this.modelSrc = data
        })
      }
    },
    // 实时预览函数
    realTime(data) {
      this.previews = data
    },

    finish2(type) {
      this.$refs.cropper2.getCropData((data) => {
        this.model = true
        this.modelSrc = data
      })
    },
    finish3(type) {
      this.$refs.cropper3.getCropData((data) => {
        this.model = true
        this.modelSrc = data
      })
    },
    down(type) {

      // event.preventDefault()
      var aLink = document.createElement('a')
      aLink.download = 'demo'
      console.log(111);
      // 输出
      if (type === 'blob') {

        this.$refs.cropper.getCropBlob((data) => {
          this.downImg = window.URL.createObjectURL(data)
          aLink.href = window.URL.createObjectURL(data)
          aLink.click()
        })
      } else {
        this.$refs.cropper.getCropData((data) => {
          this.downImg = data
          aLink.href = data
          aLink.click()
        })
      }
    },

    uploadImg(e, num) {
      //上传图片
      // this.option.img
      var file = e.target.files[0]
      if (!/\.(gif|jpg|jpeg|png|bmp|GIF|JPG|PNG)$/.test(e.target.value)) {
        alert('图片类型必须是.gif,jpeg,jpg,png,bmp中的一种')
        return false
      }
      var reader = new FileReader()
      reader.onload = (e) => {
        let data
        if (typeof e.target.result === 'object') {
          // 把Array Buffer转化为blob 如果是base64不需要
          data = window.URL.createObjectURL(new Blob([e.target.result]))
        } else {
          data = e.target.result
        }
        if (num === 1) {
          this.option.img = data
        } else if (num === 2) {
          this.example2.img = data
        }
      }
      // 转化为base64
      // reader.readAsDataURL(file)
      // 转化为blob
      reader.readAsArrayBuffer(file)
    },
    imgLoad(msg) {
      console.log(msg)
    }
  },
  components: {
    vueCropper,
    codes
  },
  mounted() {
    this.changeImg()
    // hljs.configure({useBR: true})
    var list = [].slice.call(document.querySelectorAll('pre code'))
    list.forEach((val, index) => {
      hljs.highlightBlock(val)
    })
  }
}

</script>
<style>
* {
  margin: 0;
  padding: 0;
}

.content {
  margin: auto;
  max-width: 1200px;
  margin-bottom: 100px;
}

.test-button {
  display: flex;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  background: #fff;
  border: 1px solid #c0ccda;
  color: #1f2d3d;
  text-align: center;
  box-sizing: border-box;
  outline: none;
  margin: 20px 10px 0px 0px;
  padding: 9px 15px;
  font-size: 14px;
  border-radius: 4px;
  color: #fff;
  background-color: #50bfff;
  border-color: #50bfff;
  transition: all .2s ease;
  text-decoration: none;
  user-select: none;
}

.des {
  line-height: 30px;
}

code.language-html {
  padding: 10px 20px;
  margin: 10px 0px;
  display: block;
  background-color: #333;
  color: #fff;
  overflow-x: auto;
  font-family: Consolas, Monaco, Droid, Sans, Mono, Source, Code, Pro, Menlo, Lucida, Sans, Type, Writer, Ubuntu, Mono;
  border-radius: 5px;
  white-space: pre;
}

.show-info {
  margin-bottom: 50px;
}

.show-info h2 {
  line-height: 50px;
}


/*.title, .title:hover, .title-focus, .title:visited {
		color: black;
	}*/

.title {
  display: block;
  text-decoration: none;
  text-align: center;
  line-height: 1.5;
  margin: 20px 0px;
  background-image: -webkit-linear-gradient(left, #3498db, #f47920 10%, #d71345 20%, #f7acbc 30%, #ffd400 40%, #3498db 50%, #f47920 60%, #d71345 70%, #f7acbc 80%, #ffd400 90%, #3498db);
  color: transparent;
  -webkit-background-clip: text;
  background-size: 200% 100%;
  animation: slide 5s infinite linear;
  font-size: 40px;
}

.test {
  height: 500px;
}

.model {
  position: fixed;
  z-index: 10;
  width: 100vw;
  height: 100vh;
  overflow: auto;
  top: 0;
  left: 0;
  background: rgba(0, 0, 0, 0.8);
}

.model-show {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100vw;
  height: 100vh;
}

.model img {
  display: block;
  margin: auto;
  max-width: 80%;
  user-select: none;
  background-position: 0px 0px, 10px 10px;
  background-size: 20px 20px;
  background-image: linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, #eee 75%, #eee 100%), linear-gradient(45deg, #eee 25%, white 25%, white 75%, #eee 75%, #eee 100%);
}

.c-item {
  display: block;
  padding: 10px 0;
  user-select: none;
}

@keyframes slide {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: -100% 0;
  }
}

</style>
 -->